Process for treating fats with indifferent gases to make the fats keeping



Norway,

i phere is become applicant has ascertained by his investigation of the same by an indifierent gas. this purpose the oil while being agitated .is-

Patented July 14, 19 25.

UNITED STATES PATENT OFFICE.

PETER MLLEB HEYERDAHL, OF BESTUM, NEAR CHRISTIANIA, NORWAY.

PROCESS FOR TREATING FATS wrrzs mmrrmmnb GASES TO MAKE THE FATS KEEPING.

N'o Drawing.

To all whom it may concern:

Be it known that I. PETER MoLLEn HEYER- 1mm, engineer, a subject of the King of Norway, residing at Bestum, near Christiania,

have invented certain new and useful Improvements in Processes for Treating Fats with Indifferent Gases to lllake the Fats Keeping; and-I do hereby declare the following to be a full, clear, and exact description otthe invention, such as will enable others skilled in the art to which it appertains to make and use the same.

God liver oil and other fats are when stored subject to chemical alterations where by the flavor of the fats is injuriously af'- fected.

Experience when the fats. are stored in closed vessels. It has been suggested to store the fats in an atmosphere of carbonic acid, nitrogen and other indifierent gas, but it has been impossible by these 7 means to prevent deterioration by continued storage. j

lhe socalled frothing oils produced by saturation of cod liver oil and other oils with carbonic acid and stored under pressure has also not proved to correspond to the expectations (I-Iefter: Technologie der Fette and Oslo 1909, Ed. IILP. 6).

The re'asonavhile oils even when stored in carbonic-acid or other indifierent atmosrancid according to what tions apparently rests in the fact that oils always contain a small proportion of oxygen In accordance with this observation the present invention. consists in subjecting the oils to a treatment which securesa complete expulsion of the dissolved air and,substitu- For been taken up in the oil, is permitted to escape entirely or in part.

has shown that such undesirable alterations occur even Application filed November 21, 1923. Serial No. 676,180.

Before subjecting the oil to the said treatment with indiflerentgas it is usually of advantage to place the oil under a vacuum until it has given off a substantial proportion of the oxygen contained therein. Carbonic.

acid or nitrogen is thereupon blown through the oil for such period of time as to result in expulsion of the remaining proportion of oxygen and substitution of the same by car bonic acid or nitrogen respectively. The oil is thereupon tapped into vessels for storage. These vessels are suitably'hermetically sealed when the excess of indiiieren't' gas, which has been taken up by the oil, is escaped.

Instead. of passing the gas through the oil, the oil may be blown in fine jets one or more times through a space containing an indifferent gas. In this space the gas may be maintained under an atmospheric pressure but it is preferred to operate with a gas under a high pressure Whether the gas is made use of in the one manner or the other.

During the treatment the temperature should be maintained below that at which the oil in question is known to be subject to undesirable changes. Usually it will befof advantage to operate at ordinary room temperature or at somewhat lower temperaan indifferent gas until the -oil has absorbed I the indifferent gas. p

2. A process of treating oils with indiflerent gases'in whlch the oil at a temperature near ordinary room temperature is blown in fine jets through a space containing-an indif-' ferent gas until the oil has absorbed said gas.

4 In testimony my invention, presence of two subscribing witnesses.

PETER MOLLER HEYERDAI-IL. Witnesses: MOGENS Bunsen, OLGA Mt'mma.

that I claim the foregoing as- .I have signed my name in 

